TimePick控件和TimePickDialog

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#android #控件 #对话框

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本文介绍了在Android中如何使用TimePick控件和TimePickDialog来实现时间选择功能。首先展示了TimePick控件的使用，尽管可能在某些场景下实用性不强，然后详细说明了如何创建和设置TimePickDialog，包括AlarmReceiver和AlarmActivity的配合，以实现闹钟功能。最后提到了在AndroidManifest.xml中进行的相关配置以及取消闹钟的方法。

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1.TimePick控件

TimePick控件显示一个可以更改时间的空间，不过好像并没有什么用（估计是我没用到），下面代码（代码是我写的一个小闹钟，不过提示时间到了的对话框，提示的比较慢）：
这里写图片描述
就是这样子。

xml文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    android:paddingBottom="@dimen/activity_vertical_margin"  
    android:paddingLeft="@dimen/activity_horizontal_margin"  
    android:paddingRight="@dimen/activity_horizontal_margin"  
    android:paddingTop="@dimen/activity_vertical_margin"  
    tools:context=".MainActivity" >  


    <TimePicker   
        android:id="@+id/timePicker"  
        android:layout_height="wrap_content"  
        android:layout_width="match_parent"
        /> 

    <Button   
        android:id="@+id/button1"  
        android:layout_width="match_parent"  
        android:layout_height="wrap_content"  
        android:layout_below="@id/timePicker"  
        android:text="@string/button1"
        /> 

    <Button 
        android:id="@+id/button2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/button1"
        android:text="@string/button2"
        />

</RelativeLayout>

TimePickActivity类：

package com.example.timepick;

import java.util.Calendar;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
import android.widget.Toast;

public class TimepickActivity extends ActionBarActivity {

    private int h,m = 0;;
    private TimePicker timePicker;
    private Button button1,button2;
    private AlarmManager alarmManager=null;
    private Calendar currentTime = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.timepick);

        timePicker = (TimePicker) findViewById(R.id.timePicker);
        button1 = (Button) findViewById(R.id.button1);
        button1.setOnClickListener(new ButtonListenerOne());//获取时分值

        //设置闹钟(这里不用看是闹钟设置时间的)
        currentTime = Calendar.getInstance();//获取日期对象
        button2 = (Button) findViewById(R.id.button2);
        button2.setOnClickListener(new ButtonListenerTwo());

        timePicker.setIs24HourView(true);//是否设置为24小时制    
        timePicker.setOnTimeChangedListener(new TimeListener());//获取时分值

    }

    //获取TimePick时间
    class ButtonListenerOne implements OnClickListener{

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            h = timePicker.getCurrentHour();
            m = timePicker.getCurrentMinute(); 
            //System.out.println("h:"+h+"   m:"+m);
            Toast.makeText(TimepickActivity.this, "当前设置的时间为："+h+":"+m, Toast.LENGTH_LONG).show();
        }

    }
    //读取TimePick时间（这个是TimePick改到那里提示到哪里。）
    class TimeListener implements OnTimeChangedListener{

        @Override
        public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {
            // TODO Auto-generated method stub
            /** 
             * view 当前选中TimePicker控件 
             *  hourOfDay 当前控件选中TimePicker 的小时 
             * minute 当前选中控件TimePicker  的分钟 
             */  
            //System.out.println("h:"+ hourOfDay +" m:"+minute);  
            Toast.makeText(TimepickActivity.this, "当前设置的时间为："+hourOfDay+":"+minute, Toast.LENGTH_LONG).show();
        }

    }
}

AlarmReceiver类：

package com.example.timepick;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class AlarmReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent data) {
        // TODO Auto-generated method stub 
        //Intent对象
        Intent intent=new Intent(context, AlarmActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent); 
    }

}

2.TimePickDialog
这个方法设置闹钟必写的,下面代码：

//设置闹钟（button2绑定）
    class ButtonListenerTwo implements OnClickListener{

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            currentTime.setTimeInMillis(System.currentTimeMillis()); //设置Calendar对象
            int mHour=currentTime.get(Calendar.HOUR_OF_DAY);  
            int mMinute=currentTime.get(Calendar.MINUTE); 

            new TimePickerDialog(TimepickActivity.this,new OnTimeSetListener() {

                @Override
                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
                    // TODO Auto-generated method stub

                    currentTime.setTimeInMillis(System.currentTimeMillis());//设置当前时间
                    currentTime.set(Calendar.HOUR_OF_DAY, hourOfDay);//设置小时
                    currentTime.set(Calendar.MINUTE, minute);   //设置分钟
                    currentTime.set(Calendar.SECOND, 0);    //设置秒数
                    currentTime.set(Calendar.MILLISECOND, 0);   //设置毫秒

                    //建立Intent和PendingIntent,来调用目标组件
                    Intent intent = new Intent(TimepickActivity.this, AlarmReceiver.class);
                    PendingIntent pendingIntent = PendingIntent.getBroadcast(TimepickActivity.this, 0, intent, 0);
                    //获取闹钟管理的实例
                    AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
                    //设置闹钟
                    am.set(AlarmManager.RTC_WAKEUP, currentTime.getTimeInMillis(), pendingIntent);
                    //设置周期闹钟
                    am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis()+(10*1000), (24*60*60*1000), pendingIntent);
                    Toast.makeText(TimepickActivity.this, "闹钟设置好了", Toast.LENGTH_LONG).show();
                } 
            } , mHour, mMinute, true).show();//备注这个必须要有不然不会提示的（因为你没执行）
        }

    }

AlarmReceiver类：

package com.example.timepick;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

public class AlarmReceiver extends BroadcastReceiver{

    @Override
    public void onReceive(Context context, Intent data) {
        // TODO Auto-generated method stub 
        //Intent对象
        Intent intent=new Intent(context, AlarmActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent); 
    }

}

AlarmActivity类（显示对话框的）：

package com.example.timepick;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.os.Bundle;

public class AlarmActivity extends Activity{

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //显示对话框
        new AlertDialog.Builder(AlarmActivity.this).
            setTitle("闹钟").//设置标题
            setMessage("时间到了！").//设置内容
            setPositiveButton("知道了", new OnClickListener(){//设置按钮
                public void onClick(DialogInterface dialog, int which) {
                    AlarmActivity.this.finish();//关闭Activity
                }
            }).create().show();


    }
}

取消闹钟button：

btton3.setOnClickListener(new Button.OnClickListener(){  

        public void onClick(View v) {  
            // TODO Auto-generated method stub  
            Intent intent = new Intent(TimePickActivity.this,AlamrReceiver.class);  
            PendingIntent pi = PendingIntent.getBroadcast(TimePickActivity.this, 0, intent, 0);  
            AlarmManager am = (AlarmManager)getSystemService(Activity.ALARM_SERVICE);  
            am.cancel(pi);  
            //tv.setText("闹钟取消");
            Toast.makeText(TimepickActivity.this, "闹钟取消了",Toast.LENGTH_LONG).show();
         }  

});

备注：（不然不会提示对话框的）
mainfest中必须要执行这个（位置在application中，activity下）：

<receiver android:name=".AlarmReceiver" android:process=":remote" />

样式图片大概就是这样（网上找的图片）
这里写图片描述